Thanks henrik for the explanation. I'm not sure that I do not want to keep this class implementation minimal because it is only used by the scheduler.
stef >> Yes, this was somehting Nico Schwartz and I did during the sprint. >> >> He had the idea that it would be nice to be able to add any object to a >> LinkedList, instead of just Link subclasses. (IIRC, 'like you can in Ruby' >> ;)) >> >> So we added ValueLink as the common pattern for "A link with an object in >> it", which is now the default if you add an object which itself is not a >> link. >> >> Makes it much more convenient to actually use a LinkedList, ref. f.ex. the >> Stack implementation. >> >> Sort of similar to what was done in Squeak to add nils to sets, actually. >> >> Cheers, >> Henry > Which of course makes it all the more important that it actually returns > aLink, rather than aLinkOrObject. > > Cheers, > Henry > >> >> >> On May 6, 2010, at 9:25 52AM, Stéphane Ducasse wrote: >> >>> LinkedList>>add: aLinkOrObject >>> "Add aLink to the end of the receiver's list. Answer aLink." >>> >>> ^self addLast: aLinkOrObject >>> >>> LinkedList>>addLast: aLinkOrObject >>> "Add aLink to the end of the receiver's list. Answer aLink." >>> |aLink| >>> aLink := aLinkOrObject asLink. >>> self isEmpty >>> ifTrue: [firstLink := aLink] >>> ifFalse: [lastLink nextLink: aLink]. >>> lastLink := aLink. >>> ^aLink >>> >>> Object>>asLink >>> "Answer a string that represents the receiver." >>> >>> ^ ValueLink value: self >>> >>> >>> In squeak there is no such asLink.... >>> We need a database with all the history to know which change introduced >>> this change. >>> Henrik do you remember why you introduce this change? >>> >>> Stef >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Pharo-project mailing list >>> [email protected] >>> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >>> >> >> >> _______________________________________________ >> Pharo-project mailing list >> [email protected] >> http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project >> > > > _______________________________________________ > Pharo-project mailing list > [email protected] > http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project _______________________________________________ Pharo-project mailing list [email protected] http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project
